Sony Cyber-shot DSC-W1 Photo #23 Close-Up of a Star in H-Alpha

Taken through a hydrogen-alpha filter. Prominences clearly visible with the largest at ~1:30 (of the clock). Best viewed large. Star's Data Approximate surface temperature: 9,900°F Estimated core temperature: 10 to 22.5 million°F Distance from Earth: ~93,026,724 miles Estimated mass: 2 x 1030 kilograms Nuclear output: 600,000,000 tons of hydrogen nuclei converted into helium nuclei each second This is a reprocessed version of this shot, making better use of stretching the histograms.

Technical Details

1/320 s
23 mm
400 ISO